Portable water-heater.



PATENTED MAY 3, 1904.

13. H. SCHWARTZ. PORTABLE WATER HEATER.

APPLICATION FILED OOT.6, 1903.

N0 MODEL.

. I M 4//M iINiTED STATES Patented May 3, 1904.

EDIVARD H. SCHIVARTZ, OF CHICAGO, ILLINOIS.

PORTABLE WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 758,859, dated May 3, 1904.

Application filed October 5, 1903.

To all wit/mt 7 2 may concern:

Be it known that I, EDWARD H. SCHWARTZ, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Portable ater-Heaters, of which the following is a specification.

My invention relates to improvements in water-heaters which may be constructed on a very small scale, so as to be portable, without interfering with their efficiency.

My invention relates particularly to that class of water-heaters in which as generally used no large body of water is heated at one time, but a comparatively small body of water is heated as it flows through the heater in a continuous current. Such are especially intended and adapted for domestic use in kitchens, bath-rooms, &c., and for barber-shops and like situations, where a not necessarily large quantity of hot water is required in a short time and at a slight expense.

The object of my invention is to provide such a heater which shall be economical in the consumption of fuel, effective in rapidly heating the water passing therethrough, inexpensive in construction, and which may, if desired, be made so as to be readily portable. These and such other objects as may hereinafter appear are attained by the device shown in the accompanying drawings, in which Figure l is a vertical section through the preferred embodiment of my invention. and Fig. 2 is a horizontal section on the line 2 2 of Fig. I.

Like letters of reference indicate the same parts in both figures of the drawings.

Referring by letter to the accompanying drawings, A and B are thin metal plates riveted together at their adjacent edges and yet spaced apart, so as to provide therebetween a water-heating chamber. As a matter of convenience I prefer forming these plates in the shape of, disks which are provided with one or more deep circular corrugations.

C is water-supply pipe which discharges into the water-heating chamber. Preferably this supply-pipe enters the water-heating Serial No. 175,828. (N0 odel) chamber through the central depressed portion of the plate A, while leading from ports opening out of the water-heating chamber and located adjacent to its periphery are hot-water pipes D and E, which lead to a common discharge-pipe F. Although for reasons of efficiency I consider this the preferred construction, it will be understood that this exact arrangement of the pipes C, I), E, and F is not essential to my invention.

Arranged below and supporting the plates A B is a bowl-shaped structure G, the interior of which when covered by the plates A B constitutes a heating or combustion chamber, into which discharges a burner H. This burner may be of any suitable character for burning oil, gas, or the like; but in the drawings I have shown a peculiar burner of my own invention, which is not, pm so, covered by this application, but which forms the subject-matter of m y copending application, Serial No. 189,872. This burner consists of a substantiall y spherical body having hollow walls, the space between which constitutes a gaschamber 1, to which gas or like fuel is supplied through the supply-pipe J, the supply being controlled in a familiar manner by means of a needle valve K. Extending through the top of this spherical body into its hollow center is a flame-port into which a plurality of gas-ports L open. \Vhile these gas-ports may be otherwise disposed, I prefer the arrangement shown, whereby the jets of gas charged through the ports L tend to converge to the indicated focal point and then to diverge so as to form a circle of flame around the depressed central portion of the waterheating chamber.

Opening through the bottom of the burner and into its central chamber M is an air-port N, through which air is supplied to the chamber M, where itis heated before it passes through the upper port and is combined with the gases issuing through the ports L, thereby promoting the etlicient combustion of the gas.

0 is an igniting-burner controlled by a suitable valve in the usual manner and arranged to discharge into the heating or combustion chamber through a port P, arranged adjacent to the burner. This igniting-burner may be readily'lighted from outside the apparatus, and the flame injected therefrom into the interior of the combustion-chamber will serve to ignite the fuel elements escaping into said chamber through the main burner.

The bowl G may be supported in any suitable manner-as, for example, by the legs Q. However, while I have shown suitable means for supporting the water-chamber and its connecting-pipes, it will be readily understood from the drawings that the integral structure comprising the water-cham her and its attached pipes may be, placed over the stove-holes in any gas-range or other range, so that any ordinary gas, wood, or coal fire, or the like may be utilized, in which event the supply and discharge pipes can be attached to any de sired connections by suitable unions.

By means'of'the structure shown I'expose a very thin body of water to a comparatively large body of flame, and at the same time I huddle the flame at ahigh temperature under the arch formed by the deep corrugation in the plate B, and I surround the central portion of the water-chamber with a circle of live flame, so that the hottest flame is applied to that part of the chamber which is receiving the coldest water. The water discharged under pressure into the water-chamber will tend to spread in all directions from this central point in a thin film, which will be raised to a high temperature before the water can escape through the discharge-ports. I thus succeed in continuously heating the stream of water to a high temperature as it flows through the water-heating chamber, while at the same time I so efficiently utilize the heating power of the flame that this result is attained with a comparatively small expenditure of fuel.

YVhile I have shown my invention in its preferred form and have in a very general way suggested some modifications thereof, it will be understood that my invention is not limited to the exact embodiments thereof shown or suggested.

1. In a water-heater, the combination with a pair of horizontally-arranged disks secured together to provide a water-chamber therebetween, the lower of said disks being provided with a depressed portion surrounded by a raised corrugation, of a water-feed pipe arranged to supply feed-water to said depression, and a pair of discharge-pipes arranged to conduct heated water from a location adjacent to the periphery ofsaid water-chamber.

2. A portable water-heater comprising the combination with two plates arranged horizontally to provide a water-chamber therebetween, of means for supplyingwater centrally to said chamber, means for conducting heated water from points adjacent to the periphery of said chamber, a casing closed at its top by said plates and arranged to form a heatingchamber, said casing being provided with airinlet ports adjacent to its base and with ventports adjacent to its upper edge, and a burner arranged to discharge a jet of flame into said casing and upwardly against the bottom of said water-chamber.

3. A continuous-flow water-heater, comprising the combination of a pair of plates horizontally arranged to inclose a thin sheet of water therebetween, the lowermost of said plates being formed with a central depression surrounded by a raised corrugation, a casing closed at its top by said plates and provided near its base with air-inlet ports and near its upper edge with vent-ports, and a burner arranged to discharge a jet of flame centrally and upwardly within said casing and against the lowermost of said ports.

4. In a device of the class described, the combination with a pair of horizontally-arranged plates secured together to form a water-chamber therebetween, of means for continuously supplying water to said chamber and for conducting the heated water therefrom, the bottommost of said plates being provided with a central depressed portion surrounded by a raised corrugation, of'a casing arranged below-said plate to form a heatingchamber, and a burner arranged to discharge into said heating-chamber and directly below the depressed portion in said plate, said burner comprising a substantially spherical body having hollow Walls and provided with an inner chamber having a port opening upwardly therefrom through said walls, and a similar opening into said chamber from another location, said burner being also provided with a plurality of fuel-ports opening through said hollow walls into said first-named opening in such a manner as to discharge converging jets of flame, means for supplying air to the interior of said spherical body, and means for supplying a fuel element to the hollow space between the walls of said spherical body, substantially as described.

5. In a device of the class described, the combination with a casing of a pair of horizontally-arranged plates mounted thereon, said plates being secured together to form a water-chamber therebetween, the lowermost of said plates being provided with a depressed portion, and with a raised corrugation surrounding said depressed portion, of means for supplying water centrally to the depressed portion of the water-chamber and for conveying heated water from said water-chamber, and a burner arranged to discharge a flame in the form of an inverted cone into said combustion-chamber and around the depressed ITO portion of the Water-chamber, said burner beso as to effectively mix air therewith for puring provided with a chamber tor receiving a poses of combustion.

fuel element, and With a plurality of ports arr 7 v ranged to discharge said fuel element in con- LDVARD ARlA' verging jets, said burner being also provided \Vitnesses: with means for conducting air to the point of M. E. SHIELDS, discharge from the burner of the fuel element G. Y. DANKWARD. 

